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Deeply pseudoscalar meson electroproduction with CLAS and Generalized Parton Distributions

Abstract : We discuss the recent data of exclusive $\pi^0$ (and $\pi^+$) electroproduction on the proton obtained by the CLAS collaboration at Jefferson Lab. It is observed that the cross sections, which have been decomposed in $\sigma_T +\epsilon\sigma_L$, $\sigma_{TT}$ and $\sigma_{LT}$ structure functions, are dominated by transverse amplitude contributions. The data can be interpreted in the Generalized Parton Distribution formalism provided that one includes helicity-flip transversity GPDs.
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Contributor : Sophie Heurteau <>
Submitted on : Monday, May 9, 2016 - 5:42:46 PM
Last modification on : Monday, June 29, 2020 - 6:24:23 PM

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M. Guidal, V. Kubarovsky. Deeply pseudoscalar meson electroproduction with CLAS and Generalized Parton Distributions. 20th International Conference on Particles and Nuclei (PANIC 14), Aug 2014, Hamburg, Germany. pp.125-128, ⟨10.3204/DESY-PROC-2014-04/33⟩. ⟨in2p3-01313300⟩

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